Each organism has a fixed number of chromosomes. Humans have 46 in each cell. But during reproduction, when two cells combine why don't the number of chromosomes get multiplied by 2?
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Solution

During reproduction, chromosome number (2n) gets reduced to half (n) in gametes. This is because the process of meiosis takes place in the cell which leads to the reduction of number of chromosomes to half of its original number. Mitotic divisions restore the original diploid number of chromosomes again.

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Similar questions

Fill in the blanks
(a) Mitosis occurs in our ..... cells.
(b) Mitosis produces two daughter cells whereas meiosis produces ...... daughter cells.
(c) Meiosis occurs only in ..... cells.
(d) Modern humans have 46 chromosomes. Their sperms and eggs will have......chromosomes each.
(e) During the pairing of chromosomes in meiosis, the ...... chromosomes come to lie side by side.
(f) The.......(s) are surrounded by radiating rays and termed as aster.

Q. In a diploid human cell, chromosome number is 46. What will be the chromosome number of each sperm after meiosis?

Q. Do larger organisms have more number of chromosomes / cells?

Q. The number of chromosomes in normal humans is

46

. After meiosis in sperm production, the number of chromosomes and the number of resulting cells would be

Reduction of number of chromosomes during sexual reproduction is controlled by meiotic cell division.

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Each organism has a fixed number of chromosomes. Humans have 46 in each cell. But during reproduction, when two cells combine why don't the number of chromosomes get multiplied by 2? Thanks

Each organism has a fixed number of chromosomes. Humans have 46 in each cell. But during reproduction, when two cells combine why don't the number of chromosomes get multiplied by 2?
Thanks